UNSATURATED POLYESTER RESIN COMPOSITION AND MOLDED PRODUCT

• Main Authors: NUMAO KAZUYUKI, IZUMI HIROFUMI
• Format: Patent
• Language: English
• Published: 31.10.2000
• Edition: 7
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

PROBLEM TO BE SOLVED: To provide an unsaturated polyester resin composition which may be molded in a short time without occurring any sink mark nor coming-up of glassfibers, and also provide a molded product prepared by using the composition. SOLUTION: This unsaturated polyester resin composition is prepared by dissolving an unsaturated polyester resin, obtained by allowing an acid component comprising from 30 to 70 mol% α,β-unsaturated polybasic acid and from 70 to 30 mol% 2,6-naphthalene dicarboxylic acid compound to react with a polyhydric alcohol, in a polymerizable monomer having one or more polymerizable double bond in a molecule. A molded product is prepared by laminating the unsaturated polyester resin composition and a glass fiber base material on the rear surface of a gel coat.